原子量與分子量
Assessment
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鄭之偉 鄭之偉
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Science
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7th - 9th Grade
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5 plays
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Medium
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11 questions
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1.
Multiple Choice
若甲原子與碳原子(C-12)的質量比為2:1,則甲的原子量為何?
6
12
24
48
2.
Multiple Choice
鈉原子和鉀原子的質量比為何?(Na=23,K=39)
1:1
8:13
23:39
2:3
3.
Multiple Choice
取相同數目的甲原子與碳原子做質量的比較,結果質量比為4:3,試問甲的原子量應該為何?
9
12
16
24
4.
Multiple Choice
下列各分子的分子量中,何者錯誤?(N=14,Ca=40,K=39,Na=23)
NH3=17
NaHCO3=101
NaOH=40
KNO3=101
5.
Multiple Choice
已知氫氧化鈣(Ca(OH)2)的分子量為74,且原子量H=1、O=16,則鈣(Ca)元素的原子量為多少?
17
40
57
74
6.
Multiple Choice
CaCO3的分子量為多少?(Ca=40)
100 g
100 mg
100 ng
100
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